Paper-cutting machine



2 Sheets- Sheet 1.

(No Mael.)

H. P. FEISTER.`

PAPE-R CUTTING MACHINE.

No. 319,473. Patented June 9, 1885.

AN. PETERS, Pholithngraphur, Waxhlnglon. D10,

2 Sheet-,s--Sheet 2.

(No Model.)

H. P. FBISTER.

PAPER CUTTING. MACHINE.

No. 319,473. Patented'June 9, 1885.

N. PETERS. PhokoLiihographer. Wilhlnglon, D. C.

which is provided with simply a fast pulley,

Aprovide a spring, II, having a tooth, h, which :Nn-fes sam* a'rENr @Prim-3.

PAPER-,CUTTING MACHINE.

sPHcII-IcArIoN forming part or Letters Patent No. 319,473, dated .rune 9, 188s.

' Application filed May 26, 1883. (No model.)

To @ZZ whom it may concern:

Be it known that I, HENRY P. FEIsTER, of the city of Philadelphia, county of Philadelphia, and State of Pennsylvania, have invented an Improvement in Paper-Cutting Machines, of whichthe following is'a specificaion. ll/Iy-invention has reference to paper-cuttin g machines; and it consists in certain improvements, all of which are fully set forth in the following specication, and shown in the accompanying drawings, which form part thereof.

The object of this invention is to provide suitable clamping and cutting mechanism to a paper-cutting machine, whereby simplicity and perfect action is attained and the paper to be cut is clamped with a power proportional to its thickness, the said power being automatically adjusted.

In the drawings, Figure 1 is a front elevation of my improved paper-cutting machine. Fig. 2 is a rear elevation of same. Fig. 3 is a sectional elevation of same on line m m. Fig. 4 is a sectional elevation of the vacuum and pressure generating mechanism, and Fig. 5 shows plan views of the packing or resistance used in said vacuum apparatus to prevent ready ingress of air.

A is the frame, and A the cutting-table.

B is a worm-wheel, which is secured to a shaft, C, carried in a bearing, D, on framebrace D.

E is a worm-wheel meshing with wormwheel B, provided with clutch-teeth e, and supported loosely upon the driving-shaft E,

F, or also with a loose pulley, F.

e is a clutch, which meshes with the clutchteeth e and rcciprocates upon shaft E', but rotates with it by means of the feather or key e2. rIhis clutch e is moved by a sliding bar, Gl, which may be shifted by a hand-lever, G.

Io retain the clutch in or out of action I springs over the lll-block H and holds said clutch from moving by all ordinary jars, but allows it to be readily moved by hand.

G2 is a bell-crank lever having one of its arms pivoted to the bar G and the other` arranged in such a position with relation to a cam, g, on the wormwheel B as to be automatically struck and throw back said barG and clutch, so as to stop the machine. The worm-wheel B is provided with a crank-pin, b, carrying a sliding block, b', which slides in a slot, i, in the end of the cutter-actuating lever, I, which is pivoted at J to the frame A, and has its shorter arm I preferably bent upward, so as to have a substantially horizontal movement at its free end. Also pivoted to pin J is a lever, K, of similar construction to I, with the exception that its end is has no slot and simply rests upon the pin b, this lever being adapted to aetuate the clamp.

Working in the guide-slots A2 of the frame A is the cutter-plate P and clamp-plate Q. rIhe cutter-plate P carries the knife or cutter P', and has oblique slots p at each end, through which pins p' pass, the said pins being stationary and secured to the frame. This plate is connected to the arm I by a link, O. The upper ends of the slots p may have rubber` cushions p2, to prevent the knife cutting too deeply into the table should any derangement of the operating mechanism take place. The plate Q is guided obliquely and downward by slots q, also adapted lo work on pins p', and is connected with the arm K by link O. The lower edge of plate Q is provided with a rib, Q2, which fits a groove in the clamp Q', and thereby carries it, the said clamp being guided vertically and without lateral movement by the frame-slot A2. To lessen the friction between plate Q and. clamp Q', I interpose anti-friction-rollers It, which may be carried by either plate Q or' clamp Q. 'Ihe cylinder L is pivoted to lever K at 7c', and is provided with a piston, L, and piston-rod L2, which latter extends downward, and is pivoted by a pin, i, to the arm I2 secured to or forming a part of lever I. The lower end of the cylinden L is provided with inlet-valve N and outlet-valve N, which latter may be adjusted to any pressure found most desirable by screwing down the nut n upon the spring n2. The

upper end of cylinder L is also provided with an inlet-valve, N, and an outlet-valve, N, the inlet-valve being made adjustable by a stem, n, nut n', and spring a2, to resist any desired vacuum.

M is a resistance device, also secured to the upper end of the cylinder, and consists of a IOO ` sage of air.

'm3, which are arranged also alternately,.caus` ing the air which circulates through them to take a'circuitous or S route. The upper end of this cylinder M is closed with a screwplug, M2, having a small hole, m2, for the pas- By screwing the plug more or less tightly down upon the disks the resistance offered to the passage of air is increased or diminished. Y

In place of leather disks m metal disks may be used.

Various ways without departing from my invention.

If desired, the lower end of the cylinder L may be open to the atmosphere, in which case the pressure of the atmosphere alone is enablcd to act through the creation of a partial i vacuum above the piston L; or the lower end of the cylinder may be closed, as shown, and

the upper end left open, in which case the power exerted by compressing the air would alone be utilized to clamp the paper; but I prefer to close both ends.

The operation is as follows: The shaft E I being rotated by the wheel F, the paper is placed upon the table AC The lever G is then pressed in, throwing the clutch e into action, rotating the worm E and worm-wheel B. This causes the crank-pin b to move in a circle, de-

pressing the levers I and K, lowering both the cutter P and clamp Q simultaneously until they reach the paper. As soon as the paper` arrests the downward movement of the clamp Q', and consequently the lever K, the cylinder L is held stationary, and the continued movement of the crank-pin b causes the piston L to be moved in the cylinder L, creating apartial vacuum at the upper end and pressure on the lower end. This pressure exerted on the lower end of the cylinder L, assisted by the pressure of the atmosphere upon the upper end, (which latter is enabled to be felt through the production of said partial vacuum within the'upper part of said cylinder,) causes said cylinder to be forced down, and this in turn forces down the lever K, thereby tending to clamp the paper firmly. To prevent too great a vacuum being produced, the resistance device M is used, which allows avery small supply of air, and if the machine be driven too rapidly and the difference between the movements of the cylinder L and its pistonpL be very great, or if the resistance be stopped up, there is liability to breakage, Aand to prevent this the valve N is used on lthe vacuum end of the cylinder, and the pressure-valve N on the bottom of the cylinder. As the parts regain their original positions any air above the piston is forced out by valve N,and any tendency to a vacuum below the piston is removed by the influx of air by valve N. The greater the thickness of paper to be cut the greater is the clamping action, and vice versa, for upon this depend the variations in the relative movements ofthe cylinder L and its piston L. After the. paper is cut and the parts return to their normal or original position, the cam g strikes lever Gr'l and throws the clutch e out machine with the paper unclamped.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In apaper-cutting machine, the combination of a paper-clamp, a cutter, mechanism,

' substantially as set forth, to Yoperate said cut- I do not limit myself to the details of conl struction shown, as they may be modified in t ter, vacuum-creating mechanism, substantially as set forth, connecting devicesbetween said mechanism for operating the cutter and t vacuum-creating mechanism, and between the latter and the clamp, whereby said vacuumcr'eating mechanism acts upon the paper-clamp to clamp the paper, substantially as and for the purpose specified.

2. In apaper-cuttin g machine, the combination of a paper-clamp, a cutter, mechanism, substantially as set forth, to operate said cutter and create a partial vacuum to allow the pressure of the atmosphere to act, and means, substantially as described, arranged to be acted on by said atmospheric pressure through the agency of the above mechanism to cause said clamp to press down -upon the paper, substantially as and for the purpose specified.

' 3.' In a paper-cutting machine, the combination of apaper-clamp, a cutter, mechanism, substantially as set forth, to operate said cutter, mechanism, substantially as described, to create a partial vacuum to allow the pressure of the atmosphere to act to clamp the paper, a relief device to limit the extent of vacuum produced, and connecting mechanism, substantially as set forth, whereby said atmospheric pressure acts upon the paper-clamp to cause it to clamp the paper, substantially' as and for the purpose specified.

4. In apaper-cutting machine, the combination of a paper-clamp, a cutter, mechanism, substantially as set forth, to operate said cutter, mechanism to create a partial vacuum, and pressure creating mechanism, substantially as set forth, connecting mechanism, substantially as set forth, whereby the atmospheric pressure made apparent by said partial vacuum and pressure-creating mechanism acts upon the paper-clamp to cause it to clamp the paper, substantially asV and for the purpose specified.

5. In a paper-cutting machine, the combination of a paper-clamp, a cutter, mechanism, substantially as set forth, to operate said cut- `of action, thereby automatically stopping the i IOO IIO

ter, mechanism, substantially as set forth, for

made apparent by said partial vacuum and pressurecreating mechanism acts upon the paper-clamp to cause it to clamp the paper, substantially as and for the purpose specified.

6. The combination of wheel B, having crank-pin b, means, substantially as described, to rotate said wheel, lever K, link O', plate Q, having oblique slots q, pins p', clamp Q', connecting mechanism between said wheel B and lever K, and frame A, having a guideslot, substantially as and for the purpose specified.

7. The combination of wheel B, having crank-pin b, means, substantially as described, to rotate said wheel, lever K, link O', obliquely-moving plate Q, having oblique slots q, pins p', vertically-moving clamp Q', connecting mechanism between said wheel B and lever K, rollers R, and frame A, having a guide-slot, substantially as and for the purpose specified. v

8. The combination of wheel B, having crank-pin b, means to rotate said wh eel, levers I and K, links O and O', plate Q, having oblique slots q, plate I), having oblique slots p, knife P', pins p', clamp Q', frame A, having a guide-slot, and means, controlled by the movement of lever I, to cause the clamp to irmly clamp the paper, substantially as and for the purpose speciied.

9. The combination of wheel B, having crank-pin Za, means, substantiallyas described, to rotate said wheel, levers I and K, links O and O', plate Q, having oblique slots q, plate I), having oblique slots p, knife P', pins p', clamp Q', frame A, having a guide-slot, cylinder L, piston L', piston -rod L2, and a resistance device, substantially as described, to control the passage of air into said cylinder, substantially as and for the purpose speciiied.

l0. The combination of crank-wheel B, having pin b, lever I, having slot i, lever K, cylinder L, having resistance device M, and valves N N', as set forth, piston L', and piston-rod L2, the cylinder being pivoted to lever K, and piston-rod to lever I, substantially as and for the purpose specified.

ll. The combination of levers I and K, means, substantially as described, to oscillate lever I, cylinder L, pivoted to lever K, piston L', piston-rod L2, pivoted to lever I, and resistance device M, consisting of cylinder M',

disks m and m', and plug m2, substantially as and for the purpose specified.

12. In a paper-cutting machine, the combination of a paper-clamp, a cutter, mechanism, substantially as specified, to operate said HENRY r. Fnisrna.

Witnesses:

W. MGWADE, WM. M. MoKNrelrr. 

